Machine for manufacturing paper filtering stones or tiles



(No Model.)

s. SNELL. MACHINE FOR MANUFACTURING PAPER FILTERING STONES OR TILES.

Patented Jan. '25, 1887.

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lhvrrsn STATES ATENT rrrcn.

SAMUEL SNELL, OF SPRINGFIELD, MASSACHUSETTS.

MACHINE FOR MANUFACTURING PAPER FILTERING STONES OR TILES.

SPECIFICATION forming part of Letters PatentNo. 356,508, dated January25, 1887.

Application filed June 9, 1886. Serial No. 204,648. (No model.)

To aZZ whom it may concern.-

Be it known that I, SAMUEL SNELL, of Springfield, in the county ofHampden and State of Massachusetts, have invented certain new and usefulImprovements in Machines for Manufacturing Paper Filtering StonesorTiles; and I do herebydeclare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to an improvement in machines for manufacturingpaper filtering stones or tiles, the object being to provide a machineof this character which will be simple and durablein its constructionand adapted to be operated by a minimum expenditure of power; also, toprovidea machine in which the filtering-passages may be formed in thestone without necessitating the raising or lifting of the stone in itsprocess of manufacture.

\Vith these ends in view my invention consists in certain features ofconstruction and combinations of parts, as will be hereinafterdescribed, and pointed out in the claims.

In the accompanying drawings, Figure 1 is aviewin sideelevatlon ofoneform of machine embodying my invention. Fig. 2isaplan view of thegears for raising and lowering the follower. Fig. 3 is a plan View ofthe perforated table and mold-frame supported thereon, and Fig. 4 is across-section of the filtering stone or tile. 7 v

A represents legs or standards, which support the table B, the latterbeing provided with holes a, which are cylindrical in form and extendvertically through the table.

. the table B is locateda follower, O, the ends of which engage inguides b, formed on the inner sides of the legs A, and serve to retainthe follower against displacement during its operation. 1

To the follower are secured the pins D, which are conical or tapering inform. The pins may be secured to the follower in any desired mapper; butpreferably the follower has holes of the proper size drilled through thesame, and the pins are then tightly drivenintothese holes and securelyfastened in place.

On the under side of the follower are formed the depending bosses E,which are screw- Beneath.

der, t, which rests upon the cross-bar H and supports the screw-shaft.

To the lower and projecting end of thebearing of each screw-shaft issecured a nut, d, to retain the screw-shaft in place.

I is a central shaft, journ aled in an elongated bearing or box formedon the cross-bar H, the

lower end of the shaft being provided with a handwheel, J, and the upperend witha large gear, K, the latter meshing with the four small gearwheels L on the four screw-shafts. By this construction and arrangementof parts the requisite power may be transmitted to the follower forraising and lowering it, and an even and uniform motion is transmittedto the entire surface of the follower during its operation.

On the upper surface of the tableB is placed the frame M, which consistsof the side pieces, mm, and end pieces, a a, which are detachablysecured together by the wedges 0. The side and end pieces of the frameare seated against the shoulders e at the-sides and ends of the table B,and thus are firmly secured in place.

The different parts of the machine are preferably made of metal, andthus insurestrength and durability in its construction and operation.

I-Iaving fully described the construction and arrangement of the severalparts of the machine, Iwill now briefly describe its operation.

The follower is raised so that the pins Dwill extend through the holesin the table B and project upwardly above its upper surface. The frame Mis placed on the table, as represented in Fig. 1, the ends and sides ofthe frame being firmly locked together by the wedges 0. The plasticmaterial of which the stones are made is then poured onto the tablewithin the frame M, filling the space within the frame, and to anydesired depth therein. This material is allowed to remain until it hasset or hardened, and then the follower is depressed by operating thegearing and screws described, and the pins D are thus withdrawn from thestone, leaving conical holes h formed therein and extending through thestone. The wedges are then released and the sides and ends of the frameM removed, leaving the co mpleted stone resting on the table, from whichit is then removed and the operation repeated.

The parts of the machine are extremelysiinple'and durable in theirconstruction, and not liable to become unduly worn or impaired in use.In view of the fact that the completed stone, with its series ofperforations formed therein, is produced without raising or moving thestone, there is practically no danger of cracking or breaking the stonein its manufacture.

As it is evident that many slight changes in the construction andrelative arrangement of the different parts of my improved machine mightbe made without departing from the spirit of my invention, Iwould haveit understood that I do not restrict myself to the particularconstruction and arrangement of parts shown and described; but,

Having fully described my invention, what 2 5 I claim as new, and desireto secure by Letters Patent, is-

1. The combination, with a perforated support or table and a frame madeof separable sides and ends resting on said table, of a series 0 ofadjustable or movable tapering pins adapted to extend through theperforation in the support or table and project above its upper surface.

2. The combination, with a perforated support or table constructedwithledges or shoul- 5 ders at its sides and ends and a removable frameadapted to engage said ledges or shoulders, of a follower carrying aseries of pins adapted to extend through the perforations in the tableand project above its upper surface, and devices, substantially asdescribed, for operating the follower, substantially as set forth.

3. The combination, with aperforated table and a follower provided withpins constructed and adapted to extend through the perforations in thetable and project above its upper surface, of screws and gear-wheels forraising and lowering the follower, substantially as set forth.

4. The combination, with a perforated support or table and a frame madeof separable sides and ends resting on said table, of a series ofadjustable or movable pins adapted to be withdrawn from the stone,substantially as set forth.

5. The combination, with a perforated table or support, of a followercarrying pins, screws arrangedto support the sides and ends of thefollower, and gear-wheels for raising and lowering the follower,substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

SAMUEL SNELL. W'itnesses:

S. G. No'r'rrNci-Li r,

O. P. DRURY.

